What will you get when you heat hydrated `CaSO_(4)` to `125^(@)C` instead of `200^(@)C`?

Calcium sulphate is found in nature in two forms, anhydrous calcium sulphate and hydrated calcium sulphate. When anhydrous calcium sulphate is heated with coke, sulphur dioxide gas is obtained. When hydrated calcium suphate is heated to 200^(@) C, it forms anhydrous salt. Q. What is the product formed when hydrated CaSO_(4) is heated to 125^(@) C instead of 200^(@)C ?

Calcium sulphate is found in nature in two forms, anhydrous calcium sulphate and hydrated calcium sulphate. When anhydrous calcium sulphate is heated with coke, sulphur dioxide gas is obtained. When hydrated calcium suphate is heated to 200^(@) C, it forms anhydrous salt. Q. What is the product formed when hydrated CaSO_(4) is heated to 125^(@) C instead of 200^(@)C ?

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What do you observe when Lead nitrate is heated.

Benzene on heating with fuming H_(2) SO_(4) to 200^(@) C gives :